First choice is best for persuasiveness as with counter arguments you can debunk their false accusations persuading your audience even more.
Answer:
Uncertain
Explanation:
Because it is new it probably hasn't been perfected
I only read the lottery but a theme could be, not all traditions are good,
The answer is D.
"Keep", "factor", and "calculate" are all verbs in the list of things the new system allows teachers to do. The other sentences are inconsistent with their list of verbs/adjectives/nouns. Thus, option D is the only one that is grammatically correct.
I am not too good at explaining, so let me know if you are still confused.
Hope this helps! :)